Lock.



P. DI BELLA.

LOCK. v APPLIGATIOK FILED 00112. 1908.

920,839. Patented May 4; 1909.

2 SHEETS-SHEET 1.

5 Q/vi/Mwooeo A W 85 4f I I W A661. attozwago F. DI BELLA.

' LOOK. APPLIOATION FILED 001212, 1908.

920,839. Patented May 4, 1909.

2 SHEETS-SHEET 2.

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STATES rena crisis.

FRANK n1 BELLA, or NEW YORK, N. Y.

LOCK.

Specification of Letters Patent.

Patented May 4, 1909.

Application filed October 12 1908. Serial No. 457,345.

To all whom it may concern:

Be it known that I, FRANK D1 BELLA, a

citizen of the United States, residing at New York, in the county of New York and State and latches and the object of the invention is to provide a substantial device of this character which will automatically lock itself upon the release of the retractive latch.

A further object of the invention is to lock the latches in extended or looking position so that they cannot be manipulatedby the key or handle.

A still further object of the invention is the production of a lock of this character in which the locking bar orbolt is adapted to retract thclatch bolts.

l l ith these and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a plan view of the lock; Fig. 2 is a similar view with the lid removed and with parts in section; Fig. 3 is a transverse sectional view on line 8-3 of Fig. 2 Fig. 4 is atsimila-r view on line 44 of Fig. 2 Fig. 5 is, a longitudinal section on line 55 of Fig. 2; and Fig. '6 is a detail perspective view with one of the lock members or bolts removed from the casing.

Referring more especially to the drawings, 1 represents the casing in which the lock mechanism is secured and which will be hereinafter described, and 2 represents the lid to which is secured the usual key cylinder 3 adapted to roject through the door so as to be engaged y the key as isusual. The forward end of the casingis provided with a pair of inturned ears 4 which define a relatively wide central opening 5 through which the latch bolts 6 and thelocking bolt 7 pass. The locking bolt 7. which is disposed centrally between the latch bolts 6 com rises an elongated shank '8 having rack teet 9 upon one of its side faces which is adapted to be engaged by a pinion 10 journaled in a bridge piece, 11, and provided at its center with an enlarged collar 12 through which the shaft I ofthe pinion 10 passes. The shaft is herein numbered 13 and passes entirely through the casing where it has secured to it the operat ing knob or handle 14 usually located upon the inside of the door. The inner end of the shaft has removably secured to it the key block 15 which is formed on its upper end with suitable ridges 16 adapted to conform with and enter suitable recesses upon the lower. end of the key. These recesses and ridges of course may be varied to render the looks different from one another. The end of the shank 8 is connected to the locking.

together and the upper part of the'locking bolt 7 is grooved as at 17, to receive the guiding studs 18 formed 011 the under side of the cover 2. While the latching bolts naturally guide the locking bolt inits movement, it is deemed best to provide some positive means for guiding this bolt so as to prevent any miscarriage of the latch and to avoid unnecessary friction.

The latching bolts being located upon each side ofthe locking bolt 7 and arranged adj acent the ears 4 have their forward ends suitably guided and in order to aline their rear ends there is provided suitable apertures 19 and 20 one for each leg of the latching bolts. The leg 21 of the bolt is reduced at its inner end to enter the aperture 19 and the off-set parallel leg 22 is adapted to enter the aperture 20. Each leg 22 upon the latching bolts is surroun ed by a spiral spring 23 which normally forces the latching bolts forward to the limit of their movement which is constructively when the lug 24 engages the ear' 4. Each latching bolt is cut-away or recessed, as at 25, to form shoulders 26 and 27 to receive the laterally projecting lugs 28 carried upon the locking bolt 7. It will then be seen that the lugs 28 limit the forward movement of the locking bolt by engaging with the shoulders 26 upon the latching bolts and that when the locking bolt is retracted, the lugs 28 engage the shoulders 27 and retract the latching bolts;

.In order to lock the parts, i. e. the locking and latching bolts in projected or locked position, I provide a housing 29 in which is journaled a set screw 30 having its inner end threaded into a bracket 31 secured to the bottom of the casing 1 by bolts 32. The extreme inner end of the set screw is rovided with a conical knob 33 which is a apted to enter between the teeth of the pinion 10 and thereby lock the same from movement. Adjoining the housing 29 is an extension casing 34 which communicates with the main casing through an aperture 35 so as to permit the passage of the extreme inner end of the locking bolt or shaft 8. A suitable guide stud 86 is carried upon the bottom side of the casing so as to prevent lateral movement of the extreme inner end of the shaft 8 and similar guide lugs 37 project downwardly from the top plate 2 to engage the upper side of the shaft 8 to prevent any vertical movement thereof. As the operation is the same when using either the key or handle, it will be necessary only to describe the operation of the device when the handle is used. We will assume that the locking member 7 is in its partially retracted or unlocked position with its nose flush with the casing. This will put the lugs 28 into engagement with the shoulders 27. It will now be seen that by further turning of the knob in the proper direction, the latching bolts will be withdrawn from engagement with the latching plate and the shank 8 will have its end arranged in the extension casing 34-. By releasing the knob, the springs 23 under tension tend to force the latching bolts into their normal orprojected position. The shoulders 27 being in engagement with the lugs 28 carry the locking bolt forward and after reaching its limit of movement caused by engagement of the shoulders therewith, flies to its full extended position under the impetus given it by the springs 23. When in such position, the set screw 30 may be operated to lock the parts and thus the operation of the parts by the key or handle is impossible. With the improved locking device, it will be noticed that the locking bolt may be locked in any position.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invene2o,sse

tion will be readily understood without requiring a more extended explanation.

Various changes in the form, proportions and the minor details of construction, may be resorted to without departing from the principle or sacrificing any of the advantages of the invention as defined in the appended claims.

Having thus described and ascertained the nature of my invention, what I. claim as new and desire to secure by Letters-Patent is:

1. In a device of the class described, a latching belt, a locking bolt, means for operating the locking bolt to retract the latching bolt and means to engage the operating means to lock the parts.

2. In a device of the class described, a locking bolt, a pinion. for operating the same, a handle and key connected to the pinion for operating the same, and means to engage the pinion for locking said bolt in extended position.

3. In a device of the class described, a locking bolt, a pair of spring actuated latching bolts arranged on either side of the looking bolt, means for retracting the locking bolt, means carried by the locking bolt for retracting the latching bolts and means to engage the retracting means to lock the parts.

4. In a device of the class described, a locking bolt, spring actuated latching bolts arranged on either side thereof, means for retracting the locking bolt, means carried by the locking bolt for retracting the latching bolts, and a set screw for locking the retracting means in any position.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit nesses.

FIL NK DI BELLA.

Witnesses:

FREDERICK 0. Szin'mwnnt, ANDREA D1 SoLvo. 

